Fatigue Performance of Asphalt Concretes with RAP Aggregates and Steel Slags

  • Marco Pasetto
  • Nicola Baldo
Part of the RILEM Bookseries book series (RILEM, volume 4)

Abstract

The results are presented of an experimental investigation and a theoretical study on the fatigue behaviour of asphalt concretes, determined by the four-point bending test, according to the EN 12697-24 Annex D standard. The testing was performed on bituminous mixtures, with Reclaimed Asphalt Pavement (RAP) aggregates and Electric Arc Furnace (EAF) steel slags, used at different proportions (up to 70% of the weight of the aggregates), in partial substitution for natural limestone. Fatigue life was evaluated by means of the conventional approach, related to a 50% reduction in the initial stiffness modulus, as well as using more rational concepts, related to the macro-structural damage condition of the mixtures, in terms of dissipated energy and damage accumulation. With respect to the control mixture with limestone aggregates, the asphalt concretes with RAP aggregate and EAF slags presented improved fatigue properties and delayed macro-crack initiation.

Keywords

Fatigue Life Asphalt Concrete Steel Slag Fatigue Performance Reclaim Asphalt Pavement 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    Pronk, A.C.: In: Proceedings of the 8th International Conference on Asphalt Pavement, Seattle, pp. 987–994 (1997)Google Scholar
  2. 2.
    Artamendi, I., Khalid, H.: Fatigue Fract. Engng. Mater. Struct. (28), 1113–1118 (2005)Google Scholar
  3. 3.
    Di Benedetto, H., Ashayer Soltani, M.A., Chaverot, P.: J. Assoc. Asphalt Paving Technologists. (65), 142–158 (1996)Google Scholar

Copyright information

© RILEM 2012 2012

Authors and Affiliations

  • Marco Pasetto
    • 1
  • Nicola Baldo
    • 2
  1. 1.University of PaduaPaduaItaly
  2. 2.University of UdineUdineItaly

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